Here are the Calendars I maintain – Club (Green), College Men (Blue), College Women (Pink), High School (Burnt Orange/Brown) and Professionals (Red). The Pro list is MLS and International matches in the USA primarily, often added to the Soccer on TV schedule once broadcast schedules are determined.
If you have a Google Account, you can add one or more of these calendar’s to your calendar. Click the Google Calendar icon on the bottom right. You’ll be prompted to add them from your Calendar view. As I update the calendar’s, you’ll see them reflected in your calendar. Much the way you can add the Cardinal’s schedule to your calendar.